Request: Generate GroupBy Object Array items in order as listed

REQUEST: I would like Object Array items generated the order they are listed.

I use Pull Requests to create releases and changelogs.

I understand that currently;
- groupBy Objects are generated in the order they are listed.
- groupBy Object Arrays are generated alphabetically.

Below is my configuration. For groupBy "Database" Object, I'd like "vehicle" items then "maintain" items generated in the order as listed.
Instead I always get "maintain" first because of alphabet.

```
module.exports = {
"dataSource": "prs",
"ignoreIssuesWith": [
"wontfix",
"duplicate"
],
"prefix": "",
"onlyMilestones": false,
"groupBy": {
"Housekeeping": ["internal"],
"Database": ["vehicle", "maintain"],
"Enhancements": ["enhancement"],
"Bug Fixes": ["bug"],
"null": ["null"]
},
"template": {
commit: ({ message, url, author, name }) => `- [${message}](${url}) - ${author ? `@${author}` : name}`,
issue: "- {{labels}} {{name}} [{{text}}]({{url}})",
label: "[**{{label}}**]",
noLabel: "closed",
group: "\n#### {{heading}}\n",
changelogTitle: "# Changelog\n\n",
release: "## {{release}} ({{date}})\n{{body}}",
releaseSeparator: "\n---\n\n"
},
"changelogFilename": "CHANGELOG.md"
}
```

Start by locating the code that processes the groupBy configuration and orders object-array groups, using the example configuration in the issue as the reproduction case. Verify that the Database items are emitted as "vehicle" then "maintain" rather than alphabetically, and confirm the existing ordering behavior remains intact for other groupBy forms.

Escrito por el modelo de indexación a partir del texto del issue.